I was watching a conversation between a Clarkian and a Classical apologist arguing with one another. The conversation turned to the Clarkian buffoonery of rejecting metaphysics. he admitted openly that he is an Idealist and the moderator agreed with that position appealing to Eastern Orthodox view of panentheism( with his appeal to the essence/energy distinction). It reminded me of when I was flirting with those ideas.
Those are incompatible. If idealism is true, then physical death is an illusion, the Incarnation is an illusion, the Resurrection is an illusion, &c.
If, moreover, God is timeless, and God is the source of what we imagine, then history is an illusion. No creation. No Exodus. No Parousia.
The Council 
According to absolute idealism, there is no “physical world.” At best, there’s a dream-like simulation of a physical world. Physicality is an illusion. If, moreover, we are simply divine ideas, a psychological projection of God’s timeless mind, then time is illusory, too. This is systematically contrary to Biblical creation, history, and eschatology.